---
ch-1:
  - function: concatenationvalue
    arguments:
      - 6
      - 12
      - 25
      - 1
    result: 1286
  - arguments:
      - 10
      - 7
      - 31
      - 5
      - 2
      - 2
    result: 489
  - arguments:
      - 1
      - 2
      - 10
    result: 112
ch-2:
  - function: luckynumbers
    arguments:
      - - 3
        - 7
        - 9
      - - 9
        - 11
        - 13
      - - 15
        - 16
        - 17
    result: 15
  - arguments:
      - - 1
        - 10
        - 4
        - 2
      - - 9
        - 3
        - 8
        - 7
      - - 15
        - 16
        - 17
        - 12
    result: 12
  - arguments:
      - - 7
        - 8
      - - 1
        - 2
    result: 7